Improvement in fasteners for knob-spindles



R. F. FISHER & C. S. BALLUU;

Fasteners for KnolpSpindles.

UNITED STATES PATENT OFFICE.

ROBERT F. FISHER AND CHARLES S. BALLOU, OF NORTH ATTLEBOROUGH,

MASSACHUSETTS.

IMPROVEMENT IN FASTENERS FOR KNOB-SPINDLES.

Specification forming part of Letters Patent No. 157.746, dated December15, 1874; application filed September 10, 1,874.

To all whom it may concern:

Be it known that we, RoBT. F. FISHER and O. S. BALLOU, of NorthAttl-eborough, in the county of Bristol and State of Massachusetts, havein vented certain new and useful Improvements in Door-Fasteners; and wedo hereby declare that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art towhich it pertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

Our invention relates to improvements in devices for fastening orlocking the latches of doors from the inside; and the invention consistsin forming the rose of the handle with a socket arranged radially,through which is passed a bolt or pin, the inner end of which enters ahole or socket formed in 'a spindle for its reception, thereby lockingthe latch by preventing the spindle from turning, the bolt be-' in galso looked in manner hereinafter fully set forth.

In the accompanying drawings, Figure 1 represents a portion of a latchside of a door, showing my improved fastening device; Fig. 2, a detachedview of the locking-bolt.

Referring to the parts by letters, A represents the door, and B theframe or jamb in which the latch operates. G is the rose of the handle,secured to the door by screws or by any of the well-known methods, andhaving a socket, 0, arranged radially, as shown in the drawing. D is abolt or pin having a suitable head, d, for convenience of handling. Itis cut with a longitudinal groove, d, a portion of its length, and alsolaterally at one end of the longitudinal portion of the groove, as shownat Fig. 2. E is a small screw passed through the socket c, with itspoint resting in the groove d of the bolt D. G is the spindle, formedwith a bolt-hole at the point opposite the bolt D, when the door islatched, and it may also have a similar bolt-hole at the point oppositeto the bolt D when the door is unlatched.

The operation of our invention is as follows: When the door is closedand the latch in its keeper it may be locked by pushing the bolt Dinward, the inner end entering the corresponding bolt-hole in thespindle. When it is desired to prevent the latch from operating, thehandle is turned so as to disengage the latch from the keeper, and thebolt D is then inserted in the other bolt-hole in the spindle.

When it is desired to permit the latch to operate freely withoutlocking,'the bolt is drawn out as far as the slot (1 will permit, andthen turned so as to bring the screw E into the lateral portion of theslot, thereby preventing it from moving inward and locking the latchaccidentally by the jarring or slamming of the door.

Having thus described our invention, what we claim as new, and desire tosecure by Let ters Patent, is-

The rose 0, having the radial socket c, and .7

the bolt 1), having groove 01, and screw E, in combination with thespindle, having boltholes, substantially as and for the purposespecified. y

In testimony that we claim the foregoing as our own invention, we affixour signatures in presence of two witnesses.

ROBERT F. FISHER. CHARLES S. BALLOU. Witnesses:

THOS. G. SANDLAND, CHAS. G. FALEs.

